Tesla Got $573 Million from SpaceX and xAI in 2025

Tesla generated a significant portion of its 2025 revenue through sales to two of Elon Musk’s other ventures, SpaceX and xAI, highlighting an increasingly intertwined relationship between the companies. According to an amended filing, Tesla earned over $573 million from these internal transactions, with xAI accounting for approximately $430 million and SpaceX contributing around $143 million. These figures underscore a notable shift as Tesla’s electric vehicles and battery products become integral to the operations of Musk’s broader technology ecosystem. The bulk of Tesla’s sales to xAI involved Megapacks, the company’s large-scale battery storage units, which have become a critical component in supporting xAI’s artificial intelligence infrastructure. Meanwhile, SpaceX’s purchases included a substantial number of Tesla Cybertrucks, with recent data revealing that nearly 18 per cent of Cybertruck registrations in late 2025 were linked to SpaceX, amounting to over $100 million in sales. This internal demand has provided Tesla with a valuable revenue stream amid ongoing challenges in selling the Cybertruck to external customers. Tesla has also been integrating xAI’s Grok chatbot technology into its vehicles, reflecting a broader strategy of leveraging synergies across Musk’s companies. Historically, Musk has often utilised resources and personnel across his ventures to overcome operational hurdles, and this close collaboration between Tesla, SpaceX, and xAI appears to continue that trend. While these intercompany sales represent a fraction of Tesla Energy’s overall revenue, they highlight the growing convergence of electric vehicle manufacturing, space exploration, and artificial intelligence under Musk’s leadership. Looking ahead, Tesla’s relationship with xAI remains robust, as evidenced by an additional $78 million in sales to the AI startup in the first two months of 2026 alone. This ongoing commercial exchange suggests that Tesla’s products will continue to play a crucial role in supporting the technological ambitions of Musk’s expanding corporate network. The financial interdependence between these companies may also influence future strategic decisions, potentially paving the way for closer integration or even a merger in the longer term.